Incandescent gas-burner.



No. 660,468. Patented Oct. 23 |900 G. w. sEEBAcH.

INCANDESCENT GAS'BURNER.

(Appnction mea Apr. 2e, 190cm @No Mude|.

immuun fmumuumhmnuuk Wim/E5 X656@ BY/ UNITED STATES PATENT OFFICE.

GEORGE W. SEEBAOH, OF NEW YORK, N. Y.

INCANDESCENT GAS-BURNER.

SPECIFICATION forming part of Letters Patent N o. 660,468, dated October 23, 1900.

Application led April 26,1900. Serial No. 14,487. (No model.)

To all whom it petty concern:

Be it known that I, GEORGE W. SEEBACH, a citizen of the United States, residingin the borough of Bronx, city, county, and State of NewYork, have invented new and useful Improvemenls in Incandescent Gas-Burners, of which the following is a specification.

My invention has for its object to improve incandescent gas-burners of the character now commonly' known in the art as Welsbach gas-burners.

The invention consists particularly of improvements in the support for the mantle, which is rendered incandescent and lightproducing; in the tip or regulator, which is arranged in the gas-pipe in proximity to the air-openings into the mixing-chamber, and in improvements in that part of the burner which operates to distribute the com mingled air and gas within the mantle at the place Where it is ignited and combustion begins.

These improvements are illustrated in their most approved form in the drawings accompanying this specification, wherein- Figure 1 is an elevation of a gas-burn er embodying my invention, the mantle being in section. Fig. 2 is a central longitudinal vertical sectional view. Fig. 3 is a horizontal section taken on the line 3 3 of Fig. 1. Fig. fi is a detached view of the parts which constitute the regulator and mixing-chamber of the burner separated from each other.

The support for the chimney may be of any desired or approved style and construction and is represented at 2. The gas-pipe 3 enters the said support centrally ,from below.

Instead of supporting the mantle 4 from a Wire standard arranged outside the mantle, as is common, I arrange a central support therefor, so that there is no shadow cast by such support, and I so construct it as to practically avoid liability of the support becoming misshapen under the iniiuence of the intense heat to which it is subjected. The support consists of a metallic rod or post 5, arranged centrally within the burner and eX- tending to the proper height to sustain the mantle. Its upper end is notched, as indicated at 6, to receive thev transverse asbestos or other non-combustible cord with which the upper end of the mantle is usually provided. In order to protect the rod or post 5 from the destructive effects of the intense heat within the mantle, I surround the same with a protecting-envelop 7, of asbestos or other suitable non-heat-conducting and refractory material. At the upper end of this covering or envelop I provide a disk or fiange 8 of preferably like material. This disk 8 is perforated, so as to slide freely over the rod vor post 5, and is supported in the proper position by the envelop or covering 7 for the rod, upon the upper edge of Which it rests. This diskoperates to prevent the collapse of the Vmantle at its upper end, serving to maintain it in a distended and open cylindrical condition. The material of which this disk is composed is not only practically indestructible by heat, but is also sufficiently soft or yielding to prevent injury to the mantle should it come into direct engagement therewith.

The upper enlarged end 9 of the mixingchamber is surrounded near its upper end by an annular cushion or buffer 10 of some yielding material which is unaffected by the heat to which it is subjected, such as asbestos ber. The lower expanded end of the mantle fits over and surrounds this annular cushion or buffer 1 0. lt will be readily seen that any movements of the burner which tend to sway the mantle would bring the lower edge.

thereof into engagement With the cushion or buffer just described, and it acts as a cushion to prevent fracture of the delicate substance of the mantle at the lower end, Where the destruction of the mantle usually begins.

The cap 0r end piece 11 for the enlarged portion 9 of the mixing-chamber is usually formed 'with a wire-gauze top, through which the mixed air and gas issues and where it is ignited within the mantle. I have found that better results are obtained when the top or end yof the cap-piece 11 is formed of a plate 12, provided with a series of perforations 13, concentric with the central post or rod 5, the latter being by preference secured to and carried by the said top plate. The holes or perforations 13 are small in size and arranged as close together as practicable, and the circle of holes is close to the outer edge of the cap or plate, so that the mixed air and gas issuing therefrom is ignited and burns in direct contact With the mantle.

The mixing-chamber of the burner consists,

as usual, of the enlarged upper portion 9, alreadyreferred to, and the pipe or tubular part 14, which is connected directly with the gas-pipe and extends th ence upward to the enlarged portion 9. The lower end of this tubular part 14 of the mixing-chamber is provided with openings 15 for the admission of air into the mixing-chamber, and a valve device 16, of usual or approved construction, is provided to regulate the amount or proportion of the openings 15 which it is desired should be uncovered, and thereby control the amount of air supplied to the mixing-chamber.

In burners of this type it is usual to provide the gas-pipe with a regulating or pressure-reducing device, which is usually situated in proximity to the air-openings into the mixing-chamber. The common form of regu lating and pressure-reducing device is a perforated disk or plate placed within the gastube, being usually confined between the ends of the gas-pipe 3 and the tubular portion 14 of the mixing-chamber. In such a construction the gas is introduced into the mixing-chamber below the air-openings 15. I have found this to be an objectionable arrangement, as when it is employed the flow of gas through the mixing-chamber to the burner is not so uniform and steady as is desirable, this being especially true when the burner is subject to drafts. In order that the flow of gas into the mixing-chamber may be rendered more steady and uniform and the steadiness and brilliancy of the light increased, I prefer to arrange the regulatingtip through which the gas is delivered into the mixing-chamber so that the gas enters such cham ber above the lower portions of the air-openings 15 and also centrally of the pipe or tube 14. To accomplish this proper regulation and delivery of the gas to the mixingchamber, I employ a loose tip of rivet shape, it consisting of a perforated stem 17 and a iiange-like head 18 at one end of the stem. The head or iiange 18 of the tip rests upon the internal shoulder 19, with which the gaspipe 3 is usually provided, and is clamped between such shoulder and the end of the pipe or tube 14 and serves to close the end of the gas-pipe except for the opening 'through the stem 17 of the tip. The stem of the tip is of sulicient length to extend upward to a position opposite about the middle of the openings 15. tip is of a size to permit the passage of the proper amount of gas.

The several features of construction which I have described when combined and embodied in an incandescent gas-burner coperate to increase the steadiness and the brilliancy of the light emitted and operate to decrease the liability of breakage of the mantle or of disarrangement or destruction of any of the parts.

Having described my invention, what I claim, and desire to secure by Letters Patent, 1s

l. In a gas-burner, the combination of the mixin g-chaxnber having air-openings, the gaspipe to which such chamber is connected, and a loose pressure-reducing tip at the end of the gas-pipe, the saine being of rivet shape with its iiange or head closing the end of the gaspipe and having its stern perforated and extending into the mixing-chamber to a position above the lower ends of the air-openings, substantially as set forth.Y

2. In a gas-burner, the combination of a mixing-chamber having an enlarged upper portion 9, and a tube or pipe 14, extending therefrom, the said tube or pipe being provided near the end opposite the said upper portion with air-openings 15, a valve for such openings, a gas-pipe connected with the lower end of the pipe or tube 14, and a loose pressure-reducing tip consisting of a head o'r flange 18, closing the end of the gas-pipe and a perforated stem 17 extending into the mixing-chamber to a point above the lower portions of the openings l5, substantially as set forth.

GEORGE W. SEEBACH.

Witnesses:

J. HOMER HILDRETH, FERDINAND SToRox.

The opening through the stem of the 

